Tularosa, New Mexico - 30x60 Minute USGS Topographic Map Backpacking Pages: 493

Pages: 493

use the stars to navigate rivers

Robison and J

Yellowstone National Park

and image files are included to help the user view

Tularosa, New Mexico - 30x60 Minute USGS Topographic Map Backpacking Pages: 493The distinctive characteristic of a topographic map is that the shape of the Earth's surface is shown by contour lines. Contours are imaginary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steepness of slopes. A topographic map shows more than contours. The map also includes